这是我看到的情况。

主线程你不需要等待工人退出。您的 closeEvent 应该看起来像这样：

In your main thread you do not need to wait for worker to quit. Instead your closeEvent should look like this:

if (workerThread->isRunning())
{
    workerThread->stop();
    event->ignore();
}

要使这项工作，你还需要关闭主窗口，完成：

To make this work, you also need to close main window, when worker thread finishes:

connect(workerThread, SIGNAL(finished()), SLOT(close()));

最后，使用 _isFinished 所有其他变量在工作线程）应该发生在工作线程。您可以用一个简单的技巧实现它：

Finally, all manipulations with _isFinished (and all other variables in worker thread) should occur in worker thread. You can achieve it with a simple trick:

WorkerThread.h

public:
    void stop();

protected slots:
    void p_stop();

protected:
    QMutex mutex;

WorkerThread.cpp

void WorkerThread::stop()
{
    staticMetaObject.invokeMethod(this, "p_stop", Qt::QueuedConnection);
}

void WorkerThread::p_stop();
{
    QMutexLocker locker(&mutex);
    _isFinished = true;
}

这样可以避免死锁。